Well-packer.



F. l. MOSER.

WELL PACKER.

APPLICATION FILED JUNE 22, |915.

Patented Sepft. 19, 1916.

FRED JOSEPH MOSER, OF KANE, PENNSYLVANIA.

WELL-PACKER.

Specification of Letters Patent.

Patented Sept. 19, 1916.

Application filed .Tune 22, 1915. Serial No. 35,512.

To all Iwhom it may concern Be it known that I, FRED J. MOSER, a citizen of the United States, residing at Kane, in the county of McKean and State of Pennsylvania, have invented new and useful Improvements in vWell-Packers, of which the following is a speciiication.

This invention relates to well packers and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claim.

In most gas and oil wells there is provided a casing which extends into the well a sufficient distance to close off the water from the well. These casings are subjected to the greatest corrosion at a point adjacent to the level of the water in the well. The action of the water and air at this point especially with slightly varying levels of water bring about a leakage at this point while the rest of the casing is in almost perfect condition.

Packers are used in connection with such wells but they are usually much more complicated and expensive than is necessary to make a closure below the leaks in casings formed at the level of the water as above described this being ordinarily comparatively near the surface. The object of the present invention is to provide a simple and inexpensive packer for closing leaks of this nature.

The invention is illustrated in the accompanying drawings wherein there is shown a sectional view of a well. 1 marks the outer casing ordinarily used in such wells and 2 a tubing arranged in the well. Commonly the tubing is used for removing the oil, the gas being taken on through a connection with the casing. A perforation is shown at 3 through the outer casing 2, the perforation 3 indicating a leak adjacent to the water level.

The packer sleeve 4 ordinarily formed of rubber is arranged below the leak 3. This packer sleeve has a norma-l diameter slightly greater than the inside diameter of the casing l, the diameter being such as to make a frictional engagement between the sleeve 4 and the inner wall of the casing 1.

The sleeve 4 is moiuited on a supporting sleeve 5 having the shoulder 6 at the lower end. The upper end of the sleeve 5 is screw threaded at 7 and the fitting 8 having an interior screw thread 9 is screwed onto the sleeve 5. The tting 8 is connected by means of a screw 10 with an inner casing ll extending to the top of the well.

In using the packer the parts with the sleeve 4 between the shoulder 6 and the end of the fitting 8 is forced into the well the sleeve 4 being in engagement with the inner wall of the outer casing. When the packer has been forced below the leak as 3 the fitting 8 is rotated by means of the inner casing 11. The screws 7 and 9 form a screw device, one member of which is held stationary through the action of the packer 4 and its engagement with the inner wall of the casing 1. As the tting 8 is screwed downwardly contracting the space between the shoulders, the sleeve 4 is expanded or has the pressure of its engagement with the inner surface of the casing l increased so as to make a complete closure between the inner and outer casings so as to prevent any leakage from the openings 8 to the well.

Vhat I claim as new is In a well packer, the combination o-f a casing; a packer sleeve of elastic material having a normal diameter adapted to engage the casing as it is lowered into position; an expander comprising a hollow sleeve support on which the packer sleeve is mounted, said support having a shoulder at its lower end and a screw thread at its upper end; a fitting screwed on said upper end and forming a shoulder abutting the packer sleeve and adapted to expand the packer slee-ve when rotated on the sleeve support, the packer sleeve through its engagement with the casing holding the sleeve support against turning during the initial turning movement of said fitting; and a hollow inner casing extending from said fitting and adapted to lower said packer into the well casing and to actuate the fitting to expand the packer and to form an inner casing extending upwardly from the packer.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

FRED JOSEPH MOSER. Witnesses:

W. I-I. BUNCE, JosnPHINE ROCHE.

Copies of this patent may be obtained for five cents each, `by addressing the Commissioner of Patents, Washington, D. C. 

